openstack/openstack-ansible
Code Issues Proposed changes

Add support for additional nova.conf options

Browse Source 
The following options have been added to improve support for rbd (Ceph)
in nova.

libvirt/hw_disk_discard = unmap
www.sebastien-han.fr/blog/2015/02/02/openstack-and-ceph-rbd-discard

libvirt/disk_cachemodes = "network=writeback"
www.sebastien-han.fr/blog/2013/08/22/configure-rbd-caching-on-nova

http://ceph.com/docs/master/rbd/rbd-openstack/

DocImpact
Implements: blueprint ceph-block-devices
Change-Id: Ibf717fa88326805254ca31421d9a77c47b326b67
This commit is contained in:
git-harry 2015-08-07 14:25:29 +01:00 committed by Jesse Pretorius
parent dd9261de8c
commit c8b133e025
2 changed files with 4 additions and 1 deletions
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2
playbooks/roles/os_nova/defaults/main.yml
View File

@ -250,6 +250,8 @@ nova_recreate_keys: False
#nova_libvirt_images_rbd_pool: vms
nova_ceph_client: '{{ cinder_ceph_client }}'
nova_ceph_client_uuid: 517a4663-3927-44bc-9ea7-4a90e1cd4c66
nova_libvirt_disk_cachemodes: '{{ nova_libvirt_images_rbd_pool is defined | ternary("network=writeback", "") }}'
nova_libvirt_hw_disk_discard: '{{ nova_libvirt_images_rbd_pool is defined | ternary("unmap", "ignore") }}'
## General Neutron configuration
# If ``nova_osapi_compute_workers`` is unset the system will use half the number of available VCPUS to

3
playbooks/roles/os_nova/templates/nova.conf.j2
View File

@ -254,4 +254,5 @@ images_rbd_pool = {{ nova_libvirt_images_rbd_pool }}
images_rbd_ceph_conf = /etc/ceph/ceph.conf
live_migration_flag="VIR_MIGRATE_UNDEFINE_SOURCE,VIR_MIGRATE_PEER2PEER,VIR_MIGRATE_LIVE,VIR_MIGRATE_PERSIST_DEST"
{% endif %}
hw_disk_discard = {{ nova_libvirt_hw_disk_discard }}
disk_cachemodes = {{ nova_libvirt_disk_cachemodes }}